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列车振动具有重复性高、能量强、能穿透地下介质并有效传播等特点。本次试验布设浅层地震仪记录列车振动产生的地震波,从中提取出有效的瑞雷面波成分,并成功反演出观测位置的地下地层结构,反演结果与真实地层结构相吻合,这充分说明列车振动面波方法可以用于地下结构勘探。在铁路沿线,尤其城市及交通拥挤地区,列车振动可作为一种有效利用、绿色环保的新型震源来探测地下地层结构,是对传统地震勘探震源受限条件下的一种可行解决方案。
Train vibration with high repeatability, high energy, can penetrate the underground medium and effectively spread and so on. In this experiment, a shallow seismograph is deployed to record the seismic waves generated by the train vibrations, and the effective Rayleigh wave components are extracted therefrom, and the underground stratum structure at the observed location is successfully inverted. The inversion results are in line with the real stratum structure, which fully demonstrates Train vibration surface wave method can be used for underground structure exploration. Along railway lines, especially in urban areas and congested areas, train vibration can be used as a new type of efficient and green source to detect the underground stratum structure, which is a feasible solution to the limited source of traditional seismic exploration.